From Wikipedia, the free encyclopedia
At skandiumskööl as det 3. skööl faan a cheemisk elementen. Det san skandium, ütrium, lantaan an det raadioaktiif aktiinium. Jo hiar aaltumaal tu det seerie faan a auergungsmetalen. Jo iast trii elementen hiar tu a raar eerden.
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Skööl | 3 |
Periode | |
4 | 21 Sc |
5 | 39 Y |
6 | 57 La |
7 | 89 Ac |
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